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Geiger, Hans (Wilhelm)
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Geiger, Hans (Wilhelm)
German physicist who produced the Geiger counter. He spent the period 1906–12 in Manchester, England, working with Ernest Rutherford on radioactivity. In 1908 they designed an instrument to detect and count alpha particles, positively charged ionizing particles produced by radioactive decay.
In 1928 Geiger and Walther Müller produced a more sensitive version of the counter, which could detect all kinds of ionizing radiation.
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